ā12-14-2021 09:36 AM
Solved! Go to Solution.
ā12-17-2021 08:33 AM
ā12-16-2021 03:29 AM
ā12-16-2021 01:57 AM
ā12-15-2021 10:40 AM
This was most likely ZTP or ZTP+.
ZTP (auto-provisioning) starts automatically on a factory default bootup and detects attached VLANs based on the tags of incoming traffic. The switch dynamically creates and assigns these VLANs and enables DHCP on them in an attempt to connect to the network without configuration.
ZTP+ is an extension of this whereby you can use DNS entries and/or DHCP options to point the switch to a full configuration.
Regardless, those VLANs were probably detected based on incoming traffic, and if your FW is hosting DHCP, the switch probably got a few IP addresses. If you want to stop this behavior, 'disable auto-provision' on startup. ZTP does not take effect on a switch that's already been configured/saved; only on factory default bootup.
I'm not sure when this feature was introduced but it's been a while.
Hope that helps!
Gabriel
ā12-15-2021 05:07 AM
ā12-15-2021 04:59 AM
show fabric attach assignments
show fabric attach elements
show port 1 vlanThanks
sh lldp port 1 neighbors detailed